In Scripting mode,how do I select multiple bones?
This is a script which selects Bone and Bone.005 from Armature.003

import bpy

arm = bpy.data.objects['Armature.003']
bpy.ops.object.mode_set(mode='EDIT')
bpy.ops.armature.select_all(action='DESELECT')

bones_to_select = ['Bone','Bone.005']
for bone in arm.data.edit_bones:
    if bone.name in bones_to_select:
        bone.select = True